摘要
以黄瓜秸秆、番茄秸秆和茄子秸秆3种蔬菜秸秆为原料,采用不同浓度的HCl(0.2、0.4、0.6、0.8 mol·L^(-1))作为预处理试剂,探讨HCl预处理在蔬菜秸秆厌氧消化应用中的可行性。结果表明:HCl预处理均能显著提高3种蔬菜秸秆的累积甲烷产量,且以0.6 mol·L^(-1)HCl处理更经济适宜,黄瓜秸秆、番茄秸秆和茄子秸秆累积甲烷产量分别为167.88、169.94m L·g^(-1)和146.81 m L·g^(-1),较各自未经预处理的对照分别提高了12.58%、30.97%和18.68%。HCl预处理能有效降解蔬菜秸秆中的纤维素和半纤维素,且浓度越大,降解率越高,尤其对半纤维素降解效果最明显,降解率为14.08%~43.68%。
With cucumber straw,tomato straw and eggplant straw as raw materials,different concentrations of HCl(0.2,0.4,0.6,0.8 mol·L-1)were used as pretreatment reagents to explore the feasibility of HCl pretreatment in anaerobic digestion of vegetable straws.The results showed that HCl pretreatment could significantly increase the cumulative methane yields of vegetable straws,and the treatment of 0.6 mol·L-1 HCl was more economical and suitable.After pretreatment,the cumulative methane yields of cucumber straw,tomato straw and eggplant straw were 167.88,169.94 and 146.81 mL·g-1,which were 12.58%,30.97%and 18.68%higher than that of untreated groups,respectively.HCl pretreatment could effectively degrade cellulose and hemicellulose in vegetable straws,and the higher the concentration,the greater the degradation rate.Especially,the degradation effect of hemicellulose was best,ranging from 14.08%to 43.68%.
作者
李屹
姚百伦
孟艳
韩睿
LI Yi;YAO Bailun;MENG Yan;HAN Rui(Qinghai Key Laboratory of Vegetable Genetics and Physiology,Academy of Agriculture and Forestry Sciences,Qinghai University,Xining 810016,Qinghai,China)
出处
《中国蔬菜》
北大核心
2023年第6期53-59,共7页
China Vegetables
基金
青海省自然科学基金面上项目(2021-ZJ-921)。
关键词
蔬菜秸秆
HCl预处理
厌氧消化
甲烷
vegetable straws
HCl pretreatment
anaerobic digestion
methane
